public class myclass{
    public static void main(String[] atgs){
        myclass c1 = new myclass();
        // c1.text3(2);
        c1.text4();
    }
    public void text3(int a){
        System.out.println("a="+a);
    }
    public void text4(){
        try{
            System.out.println("a");
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}